"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 极致RTO-数据库系统类
Case Name   : 开启极致RTO，备机进行failover过程中，备机异常挂住后恢复，关闭极致RTO，主备数据一致
Create At   : 2020/10/15
Owner       : @peilinqian
Description :
    1、开启极致RTO
    2、备机进行failover
    3、备机数据库进程挂住kill - 19；查询备机数据数据进程状态
    4、等待30S，恢复备机数据库进程kill - 18；查询备机数据数据进程状态
    5、验证failover结果
    6、新主机创建数据表，并插入数据功能正常
    7、还原主备
    8、还原主机创建数据表，并插入数据功能正常
    9、执行完成后，关闭极致RTO
    10、查询主备数据是否一致
    11、创建数据表，并插入数据功能正常
Expect      :
    1、开启极致RTO成功
    2、备机开始进行failover
    3、备机数据库进程挂住kill - 19成功；查询备机数据数据进程状态
    4、等待30S，恢复备机数据库进程kill - 18成功；查询备机数据数据进程状态
    5、验证failover结果成功
    6、新主机创建数据表，并插入数据功能正常
    7、还原主备成功
    8、还原主机创建数据表，并插入数据功能正常
    9、执行完成后，关闭极致RTO成功
    10、查询主备数据一致
    11、创建数据表，并插入数据功能正常
History     :
    modified：2021-4-22 by 5328113;状态结果查询方式变更，修改脚本；
    modified：2021-3-9 by 5328113;主备同步方法调用修改，增加超时等待时间；
    modified：2021-2-23 by 5328113;teardown中增加恢复主备操作
    modified：2021-2-5 by 5328113;guc参数还原时指定还原值
    modified:2020-11-18;修改kill-18后的断言；可能存在Rl状态；完善TPCC断言；
    modified:2020-12-14;删除kill-19、kill -18后的断言；
        变化的状态可能很多状态变化时间也不一定，只需保证后续恢复后功能正常即可；tpcc执行完成增加等待同步
    modified:2021-1-28 by 5328113;删除start成功断言，删除不必要tpcc
"""

import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import *
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class ExtremeRto(unittest.TestCase):
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case030:初始化----')

        self.pri_root = Node(node='PrimaryRoot')
        self.pri_dbuser = Node(node='PrimaryDbUser')
        self.sta1_root = Node(node='Standby1Root')
        self.sta1_dbuser = Node(node='Standby1DbUser')
        self.sta2_dbuser = Node(node='Standby2DbUser')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.sta_1_sh = CommonSH('Standby1DbUser')
        self.sta_2_sh = CommonSH('Standby2DbUser')
        self.com = Common()
        self.constant = Constant()
        self.tpcc_path = macro.TPCC_PATH
        self.MAX_NUM = 10000
        self.table_test = 't_RTO_Dbsys_Case030'
        self.insert_sql = f'''drop table if exists {self.table_test};
            create table {self.table_test}(id int);
            begin 
            for i in 1..{self.MAX_NUM} loop
            insert into {self.table_test} values(i);
            end loop;
            end;'''
        self.select_sql = f'select count(*) from {self.table_test};'
        self.drop_sql = f'drop table {self.table_test};'
        self.node_num = self.com.get_node_num(self.pri_root)
        self.log.info(self.node_num)
        self.max_time = 1200
        self.min_time = 300

    def test_main(self):
        try:
            self.log.info('----1、开启极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'replication_type=1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=off')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----2、备机进行failover----')
            self.log.info('----2.1、主机数据库进行gs_ctl stop；----')
            stop_msg = self.pri_sh.stopDbInstance()
            self.assertIn(self.constant.GS_CTL_STOP_SUCCESS_MSG, stop_msg)

            self.log.info('----查询主备状态----')
            self.pri_sh.getDbClusterStatus('status')

            self.log.info('----2.2、备机进行failover----')
            success_msg = self.constant.FAILOVER_SUCCESS_MSG
            failover_thread = ComThread(self.sta_1_sh.executeGsctl,
                                        args=('failover',
                                              success_msg,
                                              '',
                                              False))
            failover_thread.setDaemon(True)
            failover_thread.start()

            self.log.info('----3、备机数据库进程挂住kill - 19；----')
            self.com.kill_pid_keyword('M standby', 19, self.sta1_dbuser)
            time.sleep(1)
            self.log.info('----查询备机数据数据进程状态----')
            db_process_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
            self.log.info(db_process_cmd)
            db_process_result = self.sta1_dbuser.sh(db_process_cmd).result()
            self.log.info(db_process_result)

            self.log.info('----查询主备状态----')
            self.pri_sh.getDbClusterStatus('status')

            self.log.info('----4、等待30s，备机数据库进程挂住kill - 18；----')
            self.com.kill_pid_keyword('M standby', 18, self.sta1_dbuser)
            time.sleep(1)
            self.log.info('----查询备机数据数据进程状态----')
            db_process_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
            self.log.info(db_process_cmd)
            db_process_result = self.sta1_dbuser.sh(db_process_cmd).result()
            self.log.info(db_process_result)

            self.log.info('----5、验证failover结果----')
            failover_thread.join()
            failover_result = failover_thread.get_result()
            self.log.info(failover_result)
            self.assertTrue(failover_result)

            self.log.info('----进行refresh----')
            refresh_msg = self.sta_1_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----查询主备状态----')
            self.pri_sh.getDbClusterStatus('status')

            self.log.info('----原主机以standby启动----')
            stop_msg = self.pri_sh.startDbInstance('standby')
            self.assertIn(self.constant.RESTART_SUCCESS_MSG, stop_msg)

            self.log.info('----6、新主机创建数据表，并插入数据功能正常----')
            insert_result = self.sta_1_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.sta_1_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.sta_1_sh.check_location_consistency('primary',
                                                     self.node_num,
                                                     self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----7、还原主备----')
            self.log.info('----7.1、新主机stop----')
            stop_msg = self.sta_1_sh.stopDbInstance()
            self.assertIn(self.constant.GS_CTL_STOP_SUCCESS_MSG, stop_msg)

            self.log.info('----7.2、新备机进行failover还原主备----')
            success_msg = self.constant.FAILOVER_SUCCESS_MSG
            failover_result = self.pri_sh.executeGsctl('failover',
                                                       success_msg,
                                                       '',
                                                       False)
            self.assertTrue(failover_result)

            self.log.info('----7.3、进行refresh----')
            refresh_msg = self.pri_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----7.4、新主机以standby启动----')
            start_msg = self.sta_1_sh.startDbInstance('standby')
            self.assertIn(self.constant.RESTART_SUCCESS_MSG, start_msg)

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----8、新主机创建数据表，并插入数据功能正常----')
            insert_result = self.pri_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.pri_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

        finally:
            self.log.info('----9、执行完成后，关闭极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=on')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            # 校验备机是否完成数据同步
            self.log.info('校验备机是否完成数据同步')
            flag_1 = self.sta_1_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_1)
            flag_2 = self.sta_2_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_2)

            self.log.info('----10、查询主备数据是否一致----')
            nodes_tuple = (self.pri_dbuser,
                           self.sta1_dbuser,
                           self.sta2_dbuser)
            flag = self.com.check_data_sample_by_all(r'\d', *nodes_tuple)
            self.assertTrue(flag)

            table_dict = self.com.format_sql_result(
                self.pri_sh.executDbSql(r'\d'))
            table_name = table_dict.get('Name')
            for name in table_name:
                select_sql = f'select count(*) from {name};'
                flag = self.com.check_data_sample_by_all(select_sql,
                                                         *nodes_tuple)
                self.assertTrue(flag)

            self.log.info('----11、创建数据表，并插入数据功能正常----')
            insert_result = self.pri_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.pri_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

    def tearDown(self):
        self.log.info("----this is tearDown----")

        self.log.info('----异常中断时，恢复数据库进程kill - 18----')
        self.com.kill_pid_keyword('M standby', 18, self.sta1_dbuser)
        time.sleep(1)
        self.log.info('----查询备机数据数据进程状态----')
        db_process_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
        self.log.info(db_process_cmd)
        db_process_result = self.sta1_dbuser.sh(db_process_cmd).result()
        self.log.info(db_process_result)

        host_name = self.pri_root.sh('hostname').result()
        if self.pri_sh.check_whether_need_switch(host_name):
            self.log.info('----恢复主备关系----')
            if self.pri_sh.check_whether_need_build():
                self.log.info('如果备机无法恢复，需要重建备机')
                self.pri_sh.executeGsctl('build',
                                         self.constant.REBUILD_SUCCESS_MSG)
            self.log.info('---进行主备切换---')
            success_msg = self.constant.SWITCHOVER_SUCCESS_MSG
            result = self.pri_sh.executeGsctl('switchover', success_msg)
            self.log.info(result)
            result = self.pri_sh.exec_refresh_conf()
            self.log.info(result)

        self.log.info('----清理测试表----')
        drop_result = self.pri_sh.executDbSql(self.drop_sql)
        self.log.info(drop_result)

        self.log.info('----校验刷脏页是否完成----')
        self.pri_sh.check_whether_remain_dirty_page()

        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case030:执行完毕----')
